Randolph J. Sheffield

Follow

Person

Hatton of Fintray, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for cleaning a fractured interval between two...
- Patent number 7,011,157
- Issue date Mar 14, 2006
- Schlumberger Technology Corporation
- James M. Costley
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for downhole well equipment and process manage...
- Patent number 6,989,764
- Issue date Jan 24, 2006
- Schlumberger Technology Corporation
- Hubertus V. Thomeer
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for cleaning a fractured interval between two...
- Publication number 20040084187
- Publication date May 6, 2004
- James M. Costley
- E21 - EARTH DRILLING MINING